Question

fie triunghiul ABC cu unghiul A=90°,AB=9 cmm
calculatii
a) sin ( triunghiul C)
b) tg (triunghiul B)​

Answer 1

Explicație pas cu pas:

$\sin(C) = \frac{AB}{BC} = \frac{9}{BC}$

$\tan(B) = \frac{AC}{AB} = \frac{AC}{9}$

Answer 2

Răspuns:

BC²-AB²=AC²AC²-15²-9²

AC²=225-81

AC²=144

AC=√144

AC=12cm

sinB=co/ip⇒sinB=AC/

BC⇒sinB=12/5⇒sinB-4/5

cosB=ca/ip⇒cosB=AB/

BC⇒cosB=9/15⇒cosB=3/5

tgC=co/ca⇒tgC=AB/

AC⇒tgC=9/12⇒tgC=3/4

ctgC=ca/co⇒ctgC=AC/

AB⇒ctgC=12/9⇒ctgC=4/3